diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index 42e2bfd..5f9aff5 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.5-slim-buster@sha256:a027707a9bd22a95801d10d0d329b0afa9b99fe3d5d548afee4eab0329a46427
+FROM python:3.9.5-slim-buster@sha256:79b9c1da50bd1e2c2dd9e32520b47822d4423bf4e76b345b7e2204ed8df72336
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION 1.1.6